Alumni

Chirality is a property of asymmetry with significance in many branches of science and refers to the handedness of a material. Plasmonic materials have also been observed to exhibit handedness in response to light, which represents the basis of chiral plasmonics. I focus on the fabrication and characterization of nanomaterials (as related to chiral plasmonics) prepared using a copper mask nanosphere template lithography method developed in our lab.

Study of single molecule dynamics with sub-angstrom spatial resolution and ultrafast temporal resolution using a femtosecond laser-coupled scanning tunneling microscope.

My research involves building plasmonic nanocrystal dimer SERS platform for study of charge transfer. 

I study the spectra and electron dynamics in surface plasmon enhanced photocatalysis with time-resolved two-photon photoemission spectroscopy.

Ultrafast photoemission electron microscopy of plasmonic nanostructures

Studying photo-induced force microscopy.
Analytical modeling and full wave simulations to study electrodynamics 
of a few geometries of nanostructures used for single molecule spectroscopy and imaging. 

My research currently involves photostability studies of four-waving mixing substrates for surface-enhanced stimulated raman spectroscopy (SE-FSRS) and surface-enhanced coherent raman scattering (SE-CARS).  We have observed novel spectral features that can be explained by plasmon-driven hot electron chemistry and are working towards dynamic control of these charge transfer processes by utilizing increased temporal resolution.  I am also pursuing theoretical calculations of non-equilibrium electron dynamics in order to gain insight into rapid thermalization processes occurring with

Single Molecule Spectroscopy and Microscopy

Is using sSNOM to perform near-field mode mapping of plasmonic structures fabricated by nanomanipulation.  He will also work on pump-probe sSNOM of dye-sensitized Ti02 materials.